Human prehistoric civilization (did mysterious prehistoric civilization ever exist?)
If the history of the earth’s 4.55 billion years is compressed into one day, wise people will appear at 23:59:58 on this day on the earth. Compared with the history of the earth, the time of human existence can be said to be only a moment, which leads to a rather mysterious conjecture. Before the appearance of human beings, were there any prehistoric civilizations created by other intelligent creatures on the earth?
Have mysterious prehistoric civilizations ever existed?
No one currently knows the exact answer to this question, but it should be pointed out that if prehistoric civilizations existed, their technology may be more powerful than we think! Why did you say that? And see the analysis below.
Prehistoric civilization must have at least three characteristics: “a large number of intelligent creatures”, “know how to make and use tools”, and “establish a certain number of cities (or settlements)” before it can be called “civilization”. As long as they have these characteristics, they will inevitably leave many traces on the earth. Here we might as well take human civilization as an example.
If humans suddenly disappear, how long will it take the earth to erase all traces of human existence? There is a view that due to the influence of geological activities and natural weathering, there will be no traces of human-friendly resource networks on the earth, and the time ranges from hundreds of thousands to tens of millions of years.
But this is not the case. First, fossils. It should be noted that fossils are not only humans, but also man-made objects that can be seen everywhere on the earth. Under the right conditions, they can both form fossils. Due to their large numbers and wide distribution, these fossils are easy to find.
(The picture above shows the fossils formed when layers of ancient microorganisms accumulated into a dome shape, which was formed 3.7 billion years ago.)
In addition, human construction, underground engineering, infrastructure, mining, drilling and other facilities will leave indelible marks on the earth. In subsidence zones, these facilities are buried deep in the ground over time, forming unique formations. Although the substances that make them up will be decomposed for a long time in the Manyuyou resource network, the empty space they occupy in the formation will not be completely integrated with the surrounding natural substances, thus leaving behind.
(The above picture is a crawling trace left by a trilobite that lived hundreds of millions of years ago when it crawled through the soft mud)
Obviously, since the traces left by creatures hundreds of millions or even billions of years ago can be preserved to the present, so can the traces left by intelligent civilizations.
In our imagination, the ending of the mysterious prehistoric civilization on earth can be divided into two possibilities. One is that they are extinct, and the second is that a long time ago, their technology was powerful enough for interstellar travel, and then they left the earth.
Either way, they will leave many indelible marks on the earth, any of whichas evidence of their existence.
Now, however, we have never found such evidence. Under the premise that “prehistoric civilization did exist”, how should this be explained?
A reasonable speculation is that prehistoric civilizations deliberately removed all traces of their existence, which means that prehistoric civilizations cannot be extinct, because a dead civilization cannot erase all traces of itself, so Only the second possibility mentioned above.
Obviously, a civilization capable of large-scale interstellar migration must leave more traces than humans. Except for the earth, the entire solar system may be covered with their traces, such as a large number of empty probes and too empty garbage, and if they establish bases or cities on the moon, Mars and other planets, they will leave more traces.
It is not as simple as directly “erasing” these traces. We must know that any phenomenon that does not conform to the laws of nature may be judged as the behavior of intelligent creatures. Therefore, while prehistoric civilization “erased” its own traces, it must also restore the surrounding materials to their natural state. So if so, how powerful would their technology be?
This requires at least ultra-large-scale microscopic material observation and operation technology (the scope of operation includes all areas of its own activities), and for resources such as mines that have been mined on the earth or other planets, atomic matter is also required Observe and manipulate techniques to return them to their natural state.
This kind of thing is easy to say, but it is another matter to do it. It is no exaggeration to say that we simply cannot imagine what kind of technology can accomplish such a feat. Relatively speaking, the technology required for interstellar flight seems to be much easier. Therefore, it can be said that if prehistoric civilizations existed, their technology may be more powerful than we think.
Of course, this is just speculation. In fact, it is difficult for us to explain why this high-tech prehistoric civilization cleans up its traces.